malolomom
Answered

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Solve by completing the square. 2x^2 – 2x – 4 = 0

Solve By Completing The Square 2x2 2x 4 0 class=

Sagot :

jasongggg

Step-by-step explanation:

Factor out 2,

x² - x - 2 = 0

x² - x = 2

x² - x + (-1/2)² = 2 + (-1/2)²

(x - 1/2)² = 9/4

x = ±3/2 + 1/2

x = 2 or x = -1

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